*4.10. Soluble Solid Concentration and pH*

The soluble solid concentration (TSS) and pH of a sample were measured using the juice extracted from 1 g of the treated sample blended with 20 mL of distilled water in a tissue homogenizer. Soluble solid concentration was determined using a digital refractometer (Atago refractometer model PAL-1, Co., Ltd., Saitama, Japan), and the results were described as <sup>o</sup>Brix. The pH was measured using a pH meter (METTLER TOLEDO AG8608, Schwerzenbach, Switzerland).
